Polychlorinated biphenyls

  • Aroclor
  • 1,1’-Biphenyl, chloro derivs.
  • Chlorextol
  • Chlorinated biphenyl
  • Chlorinated diphenyl
  • Clophen
Formula
Unspecified
Description
Lower chlorinated aroclors (1221, 1232, 1016, 1242, and 1248) are practically odorless; mild aromatic odor.
Uses
Epa authorized the use of polychlorinated biphenyls in a non-totally enclosed manner in hydraulic systems, heat transfer systems, in microscopy as mounting medium, and in small quantities for research and development until july 1, 1984 (epa is proposing to amend the rule governing use of pcbs as mounting medium and in research and development).

Registry Numbers and Inventories.
CAS
1336-36-3
EC (EINECS/ELINCS)
215-648-1
EC Index Number
602-039-00-4
EC Class
Danger of cumulative effects; Dangerous for the Environment
RTECS
TQ1350000
RTECS class
Tumorigen; Reproductive Effector
UN (DOT)
2315
Beilstein/Gmelin
1368855
EPA OPP
203600
Swiss Giftliste 1
G-6578
US TSCA
Listed

Properties.
Formula
C8H8O3
Melting point, °C
143 - 144.5
Vapor density (air=1)
>1.2
Density
1.44 g/cm3 (30 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Store at pcbs in isolated areas where the drums are not vulnerable to damage from vehicles, forklifts, or other moving equipment. Store at ambient temperatures with open venting.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate clothing to prevent any reasonable probability of skin contact. Wear eye protection to prevent any possibility of eye contact.
Respirators
Respirators should be used in areas with PCB vapors and during installation and repair of containers and emergency activities.
Small spills/leaks
Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent dust cloud. Avoid inhalation of asbestos dust.
Stability
Stable.
Incompatibilities
Liquid chlorine reacts exothermically with polychlorinated biphenyl heat transfer liquid.

Fire.
Flash Point,°C
195
Fire fighting
Bureau of explosives recommendations-use extinguishing agent suitable for type of surrounding fire since pcbs do not burn or burn with difficulty. extinguish with water, foam, dry chemical, or carbon dioxide. (Cghcd* 78/uscg) updated 11/1984.
Fire potential
Flammable.
Hazards
Irritating gases are generated in fires.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
IDHL: NIOSH considers chlorodiphenyl containing 54% chlorine to be potential occupational carcinogens.
Carcinogin
I-2A, N-2, CP65
Poison_Class
1
Exposure effects
Weakness and numbness of the extremities and headache have been reported. Neurobehavioral and psychomotor impairment have been reported after occupational and in utero exposure. One of the potential symptoms of occupational PCB overexposure is decreased birth weight in offspring of exposed mothers. <br>Although relative small quantities of PCBs reach the fetus, significant PCB overexposure can cause teratogenic effects. PBBs are experimental teratogens. <br>Both PCBs and PBBs concentrate in milk.
   Ingestion
Gi upset and diarrhea have been reported.
   Inhalation
Inhalation of material may be harmful.
   Skin
Chloracne is a specific skin reaction associated with cyclic halogenated compounds. Children with in utero high exposures appear to have a higher rate of dermal reactions, including hyperpigmentation, acne and itching.
   Eyes
See Skin.

First aid
 
   Ingestion
Emesis - in almost all cases, ingestions of pcbs or pbbs will not be recognized until long after emesis would be of any value. Vomiting of the pure substance may cause aspiration. Activated charcoal - the value of administering activated charcoal for an acute, known ingestion is unknown. Activated charcoal is a fairly benign treatment, and therefore, should be considered after acute ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents. There is little specific treatment. Patients should be monitored for increased hepatic enzymes, chloracne, and the nonspecific eye, gastrointestinal, and neurologic symptoms seen in the yusho poisonings.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
A post-contamination washing cannot be assumed to remove pcbs. In animal studies only 59 percent of applied pcbs were removed from the skin with immediate washings with water and acetone, and only 1 percent was removed washing 24 hours after exposure. Multiple soap and water washings are necessary.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2315
Response guide
Hazard class
9
Packing Group
II
 
USCG CHRIS Code
PCB